Physics Bucharest 2017

Moving from 2D to 3D/ 4D IGBT

• Geometric errors in target coverage of 40% (SD) with cancer in parametrium often under-dosed in bulky cancers

• Information about OAR doses unreliable (20% SD)

• All resulted in variable practice and sub-optimal outcomes

• GEC ESTRO Guidelines published 2005-6 • Concepts and terms for use with 3D MRI

• DVH parameters, aspects of anatomy/physics/radiobiology

• Implemented over last 15 years driven by EMBRACE trial